âº to âpay âmoney in âorder to set someone âfree: Her âfather ransomed her for a million âdollars. (Definition of ransom from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press).ansom verb [T]. âº to âfree someone who has been taken away by âpaying âmoney: The âexecutive was ransomed for a million âdollars. (Definition of ransom from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
Convergent boundaries are plate boundaries formed when two tectonic plates crush together. The denser of the two plates goes under the other! For example, if two oceanic plates (which are tectonic plates found in the ocean) collide, the denser of the two plates goes under the other and forms an oceanic trench. If an oceanic plate and a continental plate collide (a continental plate is a tectonic plate that holds land/continents), the oceanic plate will go under the continental plate and goes into the mantle. If two continental plates collide, the crust thickens and is forced to create landforms such as mountains.
When one plate is composed of oceanic lithosphere and the other is composed of continental lithosphere, the denser oceanic plate is subducted, often forming an orogenic belt and associated mountain range. This type of convergent boundary is similar to the Andes or the Cascade Range in North America. subduction zone is formed at a convergent plate boundary when one or both of the tectonic plates is composed of oceanic crust. The denser plate, made of oceanic crust, is subducted underneath the less dense plate, which can be either continental or oceanic crust.